Ultraviolet cascade in classical Yang-Mills theory

作者：Kurkela Aleksi^*; Moore Guy D

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 86(5): 056008.

DOI：10.1103/PhysRevD.86.056008

We study the real-time behavior of classical Yang-Mills theory under initial conditions with nonperturbatively large, infrared field amplitudes. Our lattice study confirms the cascade of energy toward higher momenta and lower occupancy, which occurs via a scaling solution finverted right perpendicularp, t(1)inverted left perpendicular = (t(0)/t(1))(4/7)finverted right perpendicularp(t(0)/t(1))(1/7), t(0)inverted left perpendicular. Above a characteristic scale p(max), f falls exponentially; below p(max), finverted right perpendicularpinverted left perpendicular proportional to p(-4/3). We find no evidence for different infrared exponents or for infrared occupancies in excess of those described by this scaling solution. We also investigate what the fate of large occupancies would be, both in the electric and the magnetic sector.

• 出版日期2012-9-25